BD49E23G-MTR

Overview

The BD49E23G-MTR is a high-accuracy voltage detector designed for automotive applications, manufactured by Rohm Semiconductor. It features a CMOS output type and operates within a reset active voltage range of 0.95 V to 10 V. The device monitors a single input with a typical threshold voltage of 2.3 V and offers a detection precision of ±1%. It does not include a manual reset function or a watchdog timer. The component is housed in an SSOP-5 package and supports copper wire bonding technology.

Feature Summary

• High accuracy voltage detection with ±1% precision
• Ultra-low current consumption suitable for battery monitoring
• Automotive grade qualification supporting functional safety analysis

Applications

• Automotive power supply monitoring systems
• Battery backup switch circuits
• Microcontroller reset circuit generation

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the component status aligns with project requirements, as this part may be designated as Not Recommended for New Designs (NRND). Ensure compatibility with existing PCB footprints and verify RoHS compliance documentation matches the manufacturing batch specifications.

Selection Notes

Select this component when a fixed 2.3 V threshold with high precision is required for automotive voltage supervision. The CMOS output interface simplifies logic interfacing compared to open-drain alternatives. Consider the SSOP-5 package constraints and ensure the operating temperature range meets the environmental conditions of the target application without requiring additional thermal management.

Part Context

This voltage detector belongs to the BD49Exxx series of high-accuracy supervisors from Rohm Semiconductor. The series is engineered specifically for automotive electronics, emphasizing reliability and low power consumption. The BD49E23G-MTR variant provides a fixed detection level, distinguishing it from adjustable delay models within the broader product family.

Replacement Considerations

BD49E23G-M is a similar level replacement with the same pinout and package.